Consolidated Statements of Financial Position (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 31		$ 81
Short-term investments	8		49
Receivables
Energy marketing	779		786
Natural gas	391		385
Unbilled revenues	256		268
Other	150		83
Less allowance for uncollectible accounts	35		29
Total receivables, net	1,541		1,493
Inventories
Natural gas	694		637
Other	22		21
Total inventories	716		658
Derivative instruments	245		99
Prepaid expenses	223		63
Regulatory assets	83		114
Assets held for sale			283
Other	43		55
Total current assets	2,890		2,895
Long-term assets and other deferred debits
Property, plant and equipment	11,552		10,938
Less accumulated depreciation	2,462		2,295
Property, plant and equipment, net	9,090		8,643
Goodwill	1,827		1,827
Regulatory assets	631		705
Intangible assets	125		145
Long-term investments	105		113
Pension assets	97		117
Derivative instruments	42		20
Other	102		85
Total long-term assets and other deferred debits	12,019		11,655
Total assets	14,909		14,550
Current liabilities
Short-term debt	1,175		1,171
Energy marketing trade payables	777		671
Other accounts payable – trade	312		421
Current portion of long-term debt	200
Customer deposits and credit balances	125		136
Regulatory liabilities	112		183
Accrued wages and salaries	97		66
Derivative instruments	88		75
Accrued environmental remediation liabilities	87		70
Accrued taxes	79		85
Accrued interest	53		52
Liabilities held for sale			40
Other	114		148
Total current liabilities	3,219		3,118
Long-term liabilities and other deferred credits
Long-term debt	3,602		3,813
Accumulated deferred income taxes	1,724		1,628
Regulatory liabilities	1,601		1,518
Accrued pension and retiree welfare benefits	525		404
Accrued environmental remediation liabilities	327		377
Other	83		79
Total long-term liabilities and other deferred credits	7,862		7,819
Total liabilities and other deferred credits	11,081		10,937
Commitments, guarantees and contingencies (see Note 11)
Common shareholders’ equity
Common stock, $5 par value; 750,000,000 shares authorized; outstanding: 119,647,149 shares at December 31, 2014 and 118,888,876 shares at December 31, 2013	599		595
Additional paid-in capital	2,087		2,054
Retained earnings	1,312		1,063
Accumulated other comprehensive loss	(206)	[1]	(136)	[1]
Treasury shares, at cost: 216,523 shares at December 31, 2014 and 2013	(8)		(8)
Total common shareholders’ equity	3,784		3,568
Noncontrolling interest	44		45
Total equity	3,828		3,613
Total liabilities and equity	$ 14,909		$ 14,550

[1] All amounts are net of income taxes. Amounts in parentheses indicate debits to accumulated other comprehensive loss.